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Following the trends in the bike industry, its not all that surprising that groupsets are taking to the gravel, and we appreciate the careful attention and time that Shimano took in designing the GRX RD-RX810 Rear Derailleur for powering through variable conditions on a drop-bar bike. If youve been following Shimano in the all-road and off-road scene, the derailleur wont look shocking to you. In fact, its nearly identical to the RX version of the Ultegra derailleur that was launched just last year, which took queues from the Shadow mountain bike derailleur, adding in a clutch mechanism to reduce chain slap and dropped chains for a quieter and more secure ride both on and off-road. When in the on position, the clutch increases the spring force to provide crisp shifting and zero chain slap and is easily flipped off for wheel changes. What we find to be big news is that Shimano crafts the GRX RD-RX810 for both 1x and 2x setups, stepping outside of the 2x only comfort zone that the brand had held to, with this short-cage model being optimized for an 11 - 34t cassette.
Details
A designated gravel derailleur built to handle the knocks and chatter
Shadow clutch mechanism increases spring tension to eliminate chain slap
Clutch is easily flipped to make wheel changes and flat fixes a breeze
Derailleur cage tucks closer to frame to avoid hits and bumps
Compatibility for both 1x and 2x drivetrains
Works with current Shimano 11-speed road shifter/brake levers
Low-profile Shadow design helps avoid damage from impacts
Short cage accommodates up to a 34t sprocket, look to the 812 series for larger cassette needs
Item #SHIU19D
Tech Specs
Material : alloy
C
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